Map Tools for Minetest, a free and open source infinite world block sandbox game.
To install, just clone this repository into your "mods" directory.
Map Tools code is licensed under the zlib license, textures are by Calinou and are licensed under CC BY-SA 3.0 Unported.
Forum topic: https://forum.minetest.net/viewtopic.php?f=11&t=1882